H3C S5830V2 Security Configuration Manual page 48

Step
4. (Optional.) Set the data flow
and packet measurement
units for traffic statistics.
Specifying the source IP address for outgoing HWTACACS packets
The source IP address of HWTACACS packets that a NAS sends must match the IP address of the NAS
configured on the HWTACACS server. An HWTACACS server identifies a NAS by IP address. Upon
receiving an HWTACACS packet, an HWTACACS server checks whether the source IP address of the
packet is the IP address of a managed NAS. If yes, the server processes the packet. If not, the server
drops the packet.
The source address of outgoing HWTACACS packets is typically the IP address of an egress interface on
the NAS to communicate with the HWTACACS server. In some cases, however, you must change the
source IP address. For example, if the NAS is configured with the VRRP for stateful failover, the source IP
address of outgoing HWTACACS packets can be the virtual IP address of the uplink VRRP group.
You can specify the source IP address for outgoing HWTACACS packets in HWTACACS scheme view for
a specific HWTACACS scheme, or in system view for all HWTACACS schemes whose servers are in a
VPN or the public network.
Before sending an HWTACACS packet, the NAS selects a source IP address in the following order:
1. The source IP address specified for the HWTACACS scheme.
2. The source IP address specified in system view for the VPN or public network, depending on where
the HWTACACS server resides.
3. The IP address of the outbound interface specified by the route.
To specify a source IP address for all HWTACACS schemes of a VPN or the public network:
Step
1. Enter system view.
2. Specify a source IP address
for outgoing HWTACACS
packets.
To specify a source IP address for a specific HWTACACS scheme:
Step
1. Enter system view.
2. Enter HWTACACS
scheme view.
Command
data-flow-format { data { byte |
giga-byte | kilo-byte | mega-byte }
| packet { giga-packet | kilo-packet
| mega-packet | one-packet } }*
Command
system-view
hwtacacs nas-ip { ipv4-address |
ipv6 ipv6-address } [ vpn-instance
vpn-instance-name ]
Command
system-view
hwtacacs scheme
hwtacacs-scheme-name
34
Remarks
By default, traffic is counted in
bytes and packets.
The command does not apply to
802.1X and MAC users, for
whom the switch does not support
traffic accounting.
Remarks
N/A
By default, the IP address of the
HWTACACS packet outbound
interface is used as the source IP
address.
Remarks
N/A
N/A